ProgramGuruTo sort items of a Set in PHP, you can convert the Set to an array and use the sort() function.
In this example,
$numberSet with a set of numeric values.$numberSet to an array using the iterator_to_array() function.sort() function to sort the items in ascending order.print_r().<?php
$numberSet = new SplObjectStorage();
$numbers = [5, 3, 8, 1, 2];
foreach ($numbers as $num) {
$numberSet->attach((object) ['num' => $num]);
}
$array = iterator_to_array($numberSet);
usort($array, function($a, $b) { return $a->num <=> $b->num; });
print_r(array_map(function($obj) { return $obj->num; }, $array));
?>Array
(
[0] => 1
[1] => 2
[2] => 3
[3] => 5
[4] => 8
)In this example,
$stringSet with a set of string values.$stringSet to an array using the iterator_to_array() function.usort() function to sort the items in alphabetical order.print_r().<?php
$stringSet = new SplObjectStorage();
$strings = ["banana", "apple", "cherry", "date"];
foreach ($strings as $str) {
$stringSet->attach((object) ['str' => $str]);
}
$array = iterator_to_array($stringSet);
usort($array, function($a, $b) { return strcmp($a->str, $b->str); });
print_r(array_map(function($obj) { return $obj->str; }, $array));
?>Array
(
[0] => apple
[1] => banana
[2] => cherry
[3] => date
)In this tutorial, we learned How to Sort Items of a Set in PHP language with well detailed examples.